Home / 9,867.11-13,616.19-5,390.65

Finding the Fourth Proportional to 9,867.11, 13,616.19 and 5,390.65

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Solution

The fourth proportional to 9,867.11, 13,616.19 and 5,390.65 is: 7,438.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.11 : 13,616.19 = 5,390.65 : x
  2. Step 2: Convert to fraction form
    9,867.11/13,616.19 = 5,390.65/x
  3. Step 3: Cross multiply
    9,867.11x = 13,616.19 × 5,390.65
  4. Step 4: Simplify right side
    9,867.11x = 73,400,080.58
  5. Step 5: Solve for x
    x = 73,400,080.58/9,867.11
  6. Step 6: Final answer
    x = 7,438.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.